摘要
在电阻焊领域提出了显微焊接的概念并针对显微焊接对焊接电源的要求设计了阶梯波输出脉冲.把精细到以0.01 V和1 ms二个可调参数的方波输出脉冲,设计为由脉冲上升斜度θ1,第一阶梯(U1,t1)、第二阶梯(U2,t2)和脉冲下降斜度θ2六个可调参数组成的阶梯波输出脉冲,其中1θ用以扼制瞬间大电流,第一阶梯用作除漆或预热,而第二阶梯用作焊接,θ2用作后热维持.阶梯波的输出,符合脱漆焊和显微焊接对焊接电源的要求,因而能有效地延长焊头的使用寿命,减少飞溅,提高焊接质量.
The article brings forward the concept of microwelding in the field of resistance weld and discusses the requirement of welding power source for microwelding.The square pulse,whitch the adjustable minimum-setting scales are voltage amplitude of 0.01 V and pulse duration of 1 ms,is designed to step-pulse.The six adjustable parameters of the step-pulse include the pulse slip angle θ1,the first and second step voltage amplitude and duration of the step-pulse(U1,t1,U2,t2),and the pulse declining angle θ2.The function of the slip angle is to limit instant current impact,the first step-pulse is to strip or preheat,the second is to weld,and the declining angle is to postheat.Adapting to the requirement of stripping welding and microwelding for welding power,the step-pulse not only extends the life of welding tips for stripping weld,but also reduces spatter and improves welding quality.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2009年第3期1-4,共4页
Transactions of The China Welding Institution
基金
国家自然科学基金资助项目(50775046)
关键词
显微焊接
脱漆焊
阶梯波脉冲
显微焊机
microwelding
stripping weld
step-pulse
microwelding equipment
